Happy to report that i got 5 gpu's connected when i used new risers.

Not going to try more for now.

And if anyone ever reads this thread, setting PEG to Gen1 produced lower hashrates and unstable gpu load (fluctuated between 90-100% gpu usage)
When i set it back to auto, it is stable at 100% usage.

http://i.imgur.com/BJWC5nI.png